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It is a potential space in the face over the angle of the jaw, and is paired on each side. It is located between the lateral aspect of the mandible and the medial aspect of the masseter muscle and its investing fascia. The term is derived from sub-meaning "under" in Latin and masseteric which refers to the masseter
the lateral pterygoid muscle superiorly; the inferior border of the mandible (lingual surface) inferiorly; the medial pterygoid muscle medially (the space is superficial to medial pterygoid) the ascending ramus of the mandible laterally (the space is deep to the ramus of the mandible)
First, when dead bone abuts live marrow, capillaries and undifferentiated mesenchymal cells grow into the dead marrow spaces, while macrophages degrade dead cellular and fat debris. Second, mesenchymal cells differentiate into osteoblasts or fibroblasts. Under favorable conditions, layers of new bone form on the surface of dead spongy trabeculae.
Oral cancer on the tongue. Oral cancer may occur on the lips, tongue, gums, floor of the mouth or inside the cheeks. The majority of cancers of the mouth are squamous cell carcinoma. Oral cancers are usually painless in the initial stages or may appear like an ulcer.
Its medial surface is covered by the mucous membrane of the mouth. [3] [2] Its lateral surface is separated from the ramus of the mandible by adipose tissue. [2] Its posterior border gives attachment to the superior pharyngeal constrictor muscle. [3] Its anterior border attaches to the posterior edge of the buccinator muscle. [3]
These tumors, which resemble serous acinar cells, vary in their behavior from locally aggressive to blatantly malignant. It can also appear in the breast. The pancreatic form of acinic cell carcinoma is a rare subtype of exocrine pancreatic cancer. Exocrine pancreatic cancers are the most common form of pancreatic cancer when compared to ...
Calcifying odontogenic cyst (COC) is a rare developmental lesion that comes from odontogenic epithelium. [2] It is also known as a calcifying cystic odontogenic tumor, which is a proliferation of odontogenic epithelium and scattered nest of ghost cells and calcifications that may form the lining of a cyst, or present as a solid mass.
The lateral pterygoid plate of the sphenoid (or lateral lamina of pterygoid process) is broad, thin, and everted and forms the lateral part of a horseshoe like process that extends from the inferior aspect of the sphenoid bone, and serves as the origin of the lateral pterygoid muscle, which functions in allowing the mandible to move in a lateral and medial direction, or from side-to-side.